diff --git a/src/models/tanks.js b/src/models/tanks.js
index b7433b28..55761744 100644
--- a/src/models/tanks.js
+++ b/src/models/tanks.js
@@ -18,8 +18,8 @@ const tanksSchema = new mongoose.Schema({
     tankLocation: { type: String, default: null },
     connections: {
         source: { type: String},
-        inputConnections: [{ inputConnections: String}],
-        outputConnections: [{ outputConnections: String}]
+        inputConnections: [{ inputConnections: String,input_type:String }],
+        outputConnections: [{ outputConnections: String,output_type:String }]
     }
 
 });
diff --git a/src/routes/createConnectionsRoute.js b/src/routes/createConnectionsRoute.js
index 8f189276..5280e075 100644
--- a/src/routes/createConnectionsRoute.js
+++ b/src/routes/createConnectionsRoute.js
@@ -31,6 +31,7 @@ module.exports = function (fastify, opts, next) {
                             type: "object",
                             properties: {
                                 inputConnections: { type: "string", default: null },
+                                input_type: { type: "string", default: null },
                             },
                         },
                     },
@@ -41,6 +42,7 @@ module.exports = function (fastify, opts, next) {
                             type: "object",
                             properties: {
                                 outputConnections: { type: "string", default: null },
+                                output_type: { type: "string", default: null },
                             },
                         },
                     },
@@ -92,6 +94,7 @@ module.exports = function (fastify, opts, next) {
                         type: "object",
                         properties: {
                             inputConnections: { type: "string", default: null },
+                            type: { type: "string", default: null },
                         },
                     },
                 },
@@ -102,6 +105,7 @@ module.exports = function (fastify, opts, next) {
                         type: "object",
                         properties: {
                             outputConnections: { type: "string", default: null },
+                            type: { type: "string", default: null },
                         },
                     },
                 },